Giant fluctuations and gate control of the g-factor in InAs nanowire quantum dots.
We study the g-factor of discrete electron states in InAs nanowire based quantum dots. The g values are determined from the magnetic field splitting of the zero bias anomaly due to the spin 1/2 Kondo effect. Unlike to previous studies based on 2DEG quantum dots, the g-factors of neighboring electron states show a surprisingly large fluctuation: g can scatter between 2 and 18. Furthermore electric gate tunability of the g-factor is demonstrated.
Csonka
S
S
Department of Physics, University of Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland. szabolcs.csonka@unibas.ch
Hofstetter
L
L
Freitag
F
F
Oberholzer
S
S
Schönenberger
C
C
Jespersen
T S
TS
Aagesen
M
M
Nygård
J
J